Walker g



(No Model.)

W. G. BROWNE.

GUT-OPF FOR WATER PIPES. No. 360,139. Patented Ma1n29, 1887.

FQF II Figli InVEntnrf.

yogvp( by MWL 62, M/Atiy..

- 3o as a wrench to turn the valve, and also show- UNITED STATES PATENT Oar-FICE.

XVALKER G. BROW'XE, OF ATLANTA, GEORGIA, ASSIGNOR TO THE UNITED STATESAUTOMATIC VATER CUT-OFF COMPANY.

CUT-OFF FOR WATER-Pipes.

' ,SPECIFICATION forming part of Letters Patent No. 360,139, dated March 29. 1887.

Application filed August 23, 1886.

To all whom it may concern,.-

Be it known t-hat I, WALKER G. BRowNn, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented a new and useful Cut- Off for Tater-Pipes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains 1o to make and use the same, reference being had tothe accompanying drawings, and to letters or gures of reference vmarked thereon, which form a part of this specification. This invention is a device for automatically closing the valves of water-pipes, the actuating power being the contraction of a compound coil composed of metals having dii'erent expansive qualities; and it consists in means for utilizing the same, as will be hereinafter fully described.

In the accompanying drawings, Figure I isa view of the ditferent parts of the device connected to a pipe. Fig. His a longitudinal section through the compound coil, the inclosingcase, and the valve. Fig. III is adetail showing the adj Listing-plate by which the valve is set to open at any desired degree of temperature. Fig. IV is an end view of the compound coil. Fig. V is a view of the plate thatl acts ing the valve-stem and spring. Y l In these figures a water-pipe is represented at 1. 2 is a valve of any kind that will open and 3 5 close by a partial rotary movement. 3 is a lever attached to the stem of this valve, on one end of which is hung a vessel, 4, and on the otherend is a counter-balance, 5.

is a rotary valve having an opening to cor- 4o respond with an opening in the valve-seat. The outer end of this valve tits the square hole in the plate 7, which plate is attached to the compound coil 8 9, the valve-stem being square and free to move through the square hole in the plate 7, but turning withnsaid plate. The compound coil 8 9 is composed of two metalsphaving different expansive qualities. To the opposite end of the compound coil is attached the plate'lO, having the stud llon its 5o Side, on which isa nut, 12. The part 13,in which Selial No. 211,683. (No model.)

is the val Ve-seat, is screwed into the pipe-fitting 14, and on the' other end is screwed a casing having a cover, 16, through which the stud on the plate 10 passes and is held by the nut 12. The stem of the valve Gis encircled at its outer end by a spring, 17, to keep it in place when there is no pressure of water against it. Into the part l3'is screwed the pipe 18. The valve 2 and lever 3 should be so set that when the valve is open the end of the lever to which the vessel is attached will be somewhat elevat-ed.

The valve 6 should be so set that when the temperature shall have arrived at the point at which it is desired to close the valve the holes in the valve and its seat will coincide and allow water to flow from the pipe into the vessel 4, and by its weight to cause the valve to close. lt is preferable that the valve 2 should be a stop and waste valve, in order that the parts beyond it will drain, and that the water shall flow from that valve to the point at which the part 13 isY attached, in order that the water will'stop flowing through the valve 6 whenever the pipes shall have been drained. The valve 6 assists in draining the pipesabove it, and forms a vent for the pipes below.

The valve 2 being open and the vessel 4 being empty, the counter-balance will hold the valve in that position until the vessel shall have received a sufcient amount of water from the pipe 18 to turn the lever down and close it, which will occur whenever the unequal expansion of the metals in the compound coil shall have turned the valve sufficiently to cause a coincidence in the holes in the valve and seat.

The compound coil 8 9, which is preferably composed of steel andbrass, the part 8 being steel and having a low expansive quality, and the part 9 being brass and having a high expansive quality, being brazed together, has a tendency to straighten by the excessive contraction of the brass on the lowering of the temperature, thus causing the valve to revolve and allow the water to flow through the pipe 18 to the vessel 4. The raising of the temperature will cause a reverse revolution to take iplace and close the aperture in the valve 6.

Itis obvious that other metals might be used IOL) 2v A ascuas in the compound coil,`or. that their positions might be reversed without changing the principle of its operation. y

I am aware that it isv not new to operateA acut-off valve in 'water-pipes by means of a compound spring composed of two metals hav.-

`ing diierent'expansive qualities Aunder the ac- .tion .of the same degree of heat, and do not' therefore broadly claim suhvan apparatus, but

limit my claims to ythe specific construction which I haveillustrated and described.

y Having thus described my invention, what I claimas new, and desire to secure by'Letters Patent of the 'United States, is'

1. Ina cutoff' for water-pipes, the combination of the compound coil composed of two l strips of different metals; 8 9, voneend of said coil being stationary and the other having a -rotary movement, as described, the valveoperating plate 7, the rotating valve 6, its stem p loosely iitting said operating-plate, but turn'- ingwith it, the spring 17,'and the xed valvep seat, all arranged and operating to cause a discharger of water through the pipe 18 by the change in the temperature of thelcom;l

pound coil, substantially as set forth.

2. In a cut-oft' for water-pipes, the combination-of the compound coil and valve operated by said coil with the pipe 18 and valve 2, lever 3, and vessel 4, to contain,- water to act as a weight for closing. said valve 2, subf stant-ially asspecied. I 3. ln-an automatic cut-olf for water-pipes,

the combination ofthe compound coil 8 9, .the

adj usting-'plate 10, the plate 7, spring 17, valve 3, having counter-balance 5, arranged, substantially as described, to close the valve 2.

6, the part`13, and vessel 4, attached to a lever,

In testimony whereof I'affx my signature in l 

